A Day on BART: What it's like to commute at night

SAN FRANCISCO (KGO) -- BART is our biggest, most widespread, and most taken mass transit system in the Bay Area. For hundreds of thousands of Bay Area residents it's the cheapest, fastest and most reliable form of mass transportation.

We sent several ABC7 staffers to ride every line in the system from sunrise to sundown, to document what they saw and to talk to other riders about their experiences, concerns and possible solutions for building a better mass transit system.